11137442440 has 32 divisors (see below), whose sum is σ = 25204112280. Its totient is φ = 4429222912.

The previous prime is 11137442389. The next prime is 11137442443. The reversal of 11137442440 is 4424473111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9591851844 + 1545590596 = 97938^2 + 39314^2 .

It is not an unprimeable number, because it can be changed into a prime (11137442443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797809 + ... + 811648.

Almost surely, 2^11137442440 is an apocalyptic number.

11137442440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11137442440 is an abundant number, since it is smaller than the sum of its proper divisors (14066669840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11137442440 is a wasteful number, since it uses less digits than its factorization.

11137442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609641 (or 1609637 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 11137442440 in words is "eleven billion, one hundred thirty-seven million, four hundred forty-two thousand, four hundred forty".